Jesse Hallam 9667c96f97 MM-30892: Avoid unnecessary table scan in AnalyticsPostCount. (#16643)
* MM-30892: Avoid unnecessary table scan in AnalyticsPostCount.

[AnalyticsPostCount](d9e8402dc2/store/sqlstore/post_store.go (L1513-L1541)) unconditionally joins on the `Channels` table even when not filtering to a team.

This is a proposal to stop doing this, reducing this to a simple index query when no team is specified. Note that this is technically a subtle semantic difference, since orphaned posts (from deleted or invalid channel ids) are currently excluded. But I submit the benefits outweigh the technical differences here.

Fixes: https://mattermost.atlassian.net/browse/MM-30892

* Update store/sqlstore/post_store.go

Co-authored-by: Claudio Costa <cstcld91@gmail.com>

* Update store/sqlstore/post_store.go

Co-authored-by: Claudio Costa <cstcld91@gmail.com>

Co-authored-by: Claudio Costa <cstcld91@gmail.com>
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Mattermost

Mattermost is an open source, private cloud, Slack-alternative from https://mattermost.com.

It's written in Golang and React and runs as a single Linux binary with MySQL or PostgreSQL. Every month on the 16th a new compiled version is released under an MIT license.

screenshot at nov 29 14-11-32

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